ES434864A1 - Method for removing sodium sulfate from aqueous solutions - Google Patents
Method for removing sodium sulfate from aqueous solutionsInfo
- Publication number
- ES434864A1 ES434864A1 ES434864A ES434864A ES434864A1 ES 434864 A1 ES434864 A1 ES 434864A1 ES 434864 A ES434864 A ES 434864A ES 434864 A ES434864 A ES 434864A ES 434864 A1 ES434864 A1 ES 434864A1
- Authority
- ES
- Spain
- Prior art keywords
- sodium sulfate
- solution
- sulfur dioxide
- sodium
- absorbing solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/60—Isolation of sulfur dioxide from gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
Metal, e.g. sodium sulfate, is separated from metal, e.g. sodium sulfite, in a solution, for instance a solution used in a system involving contact of sulfur dioxide-containing gases with the sodium sulfite solution as an absorbing solution to recover sulfur dioxide wherein the absorbing solution is regenerated after contact with the gas and recycled for further use. A portion of the absorbing solution is purged to avoid the unduly large build-up of sodium sulfate in it. The purge stream is contacted with sulfur dioxide to reduce the amount of sodium sulfite therein to relatively soluble sodium bisulfite, and the relatively insoluble sodium sulfate is recovered therefrom as undissolved solids. The liquid separated from the sodium sulfate, which is rich in sodium bisulfite, is returned to the absorbing solution. In a preferred aspect, the purge stream is withdrawn from the absorbing solution subsequent to contact with the sulfur dioxide-containing gases and before regeneration.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/443,326 US3971844A (en) | 1974-02-19 | 1974-02-19 | Method for removing sodium sulfate from aqueous solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES434864A1 true ES434864A1 (en) | 1976-12-01 |
Family
ID=23760353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES434864A Expired ES434864A1 (en) | 1974-02-19 | 1975-02-19 | Method for removing sodium sulfate from aqueous solutions |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US3971844A (en) |
| JP (1) | JPS50118987A (en) |
| AT (1) | ATA104375A (en) |
| AU (1) | AU468706B2 (en) |
| BE (1) | BE825584A (en) |
| BR (1) | BR7500977A (en) |
| DE (1) | DE2506666A1 (en) |
| ES (1) | ES434864A1 (en) |
| FR (1) | FR2261223B3 (en) |
| IT (1) | IT1030169B (en) |
| NL (1) | NL7501979A (en) |
| NO (1) | NO750537L (en) |
| SE (1) | SE7501732L (en) |
| ZA (1) | ZA75376B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1528454A (en) * | 1974-12-13 | 1978-10-11 | Davy Powergas Ltd | Sulphur dioxide removal or recovery |
| ZA766140B (en) * | 1975-11-10 | 1978-05-30 | Davy Powergas Inc | Process for removing sulfur dioxide from a gas stream |
| US4206187A (en) * | 1975-12-15 | 1980-06-03 | Davy Powergas, Inc. | Process for removing sulfur dioxide from gas |
| US4200619A (en) * | 1976-01-08 | 1980-04-29 | Davy Powergas, Inc. | Process for purging sodium sulfate from a sulfur dioxide removal system |
| US4122148A (en) * | 1976-04-20 | 1978-10-24 | Davy Powergas Inc. | Sulfur dioxide removal process |
| US4177244A (en) * | 1976-07-24 | 1979-12-04 | Ullrich Neumann | Process for purge stream treatment in removal of sulfur dioxide |
| US4425313A (en) | 1976-08-16 | 1984-01-10 | Cooper Hal B H | Removal and recovery of nitrogen and sulfur oxides from gaseous mixtures containing them |
| US4426364A (en) | 1976-08-16 | 1984-01-17 | Cooper Hal B H | Removal and recovery of nitrogen oxides and sulfur dioxide from gaseous mixtures containing them |
| US4207299A (en) * | 1977-02-16 | 1980-06-10 | Davy Powergas, Inc. | Sulphur dioxide removal process |
| US4216189A (en) * | 1978-10-10 | 1980-08-05 | Davy Powergas, Inc. | Sulfur dioxide removal process |
| US4237104A (en) * | 1979-04-30 | 1980-12-02 | Uop Inc. | Flue gas treatment for sulfur dioxide removal |
| US4250153A (en) * | 1979-06-11 | 1981-02-10 | Uop Inc. | Flue gas treatment |
| US4255402A (en) * | 1979-08-13 | 1981-03-10 | Lowell Philip S | Sulphur dioxide gas scrubbing process |
| US4708856A (en) * | 1986-03-03 | 1987-11-24 | Norton Company | Liquid-gas absorption process |
| US4834959A (en) * | 1986-03-10 | 1989-05-30 | The Dow Chemical Company | Process for selectively removing sulfur dioxide |
| JP4968582B2 (en) * | 2006-12-11 | 2012-07-04 | 住友金属鉱山株式会社 | Method for producing sodium bisulfite solution |
| US7985396B2 (en) * | 2008-07-11 | 2011-07-26 | Solvay Chemicals, Inc. | Process for production of sodium bisulfite |
| CN115159469B (en) * | 2022-06-29 | 2024-08-09 | 江苏德义通环保科技有限公司 | Recovery of SO with different concentration from waste liquid2Apparatus and method for gas |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB394646A (en) * | 1931-01-27 | 1933-06-29 | Metallgesellschaft Ag | Process for the production of alkali sulphates and sulphur |
| US3607037A (en) * | 1968-12-20 | 1971-09-21 | Wellman Lord Inc | Separation of sulfur dioxide from gases |
| US3607033A (en) * | 1969-01-27 | 1971-09-21 | Chemical Construction Corp | Recovery of sulfur dioxide from waste gas streams |
| US3653812A (en) * | 1969-07-18 | 1972-04-04 | Wellman Lord Inc | Process for removal of sulfur dioxide from gas streams |
| US3650692A (en) * | 1969-12-09 | 1972-03-21 | Chemical Construction Corp | Removal of sulfur dioxide from waste gases |
| US3758668A (en) * | 1970-08-11 | 1973-09-11 | Babcock & Wilcox Co | So2 absorption system with regeneration of absorbent |
| US3826812A (en) * | 1971-10-22 | 1974-07-30 | Basic Inc | Treatment of flue gases and the like |
| US3775532A (en) * | 1972-02-18 | 1973-11-27 | Chemical Construction Corp | Removal of sulfur dioxide from gas streams |
-
1974
- 1974-02-19 US US05/443,326 patent/US3971844A/en not_active Expired - Lifetime
-
1975
- 1975-01-20 ZA ZA00750376A patent/ZA75376B/en unknown
- 1975-02-12 AT AT751043A patent/ATA104375A/en not_active Application Discontinuation
- 1975-02-13 FR FR7504561A patent/FR2261223B3/fr not_active Expired
- 1975-02-14 BE BE153409A patent/BE825584A/en unknown
- 1975-02-17 DE DE19752506666 patent/DE2506666A1/en active Pending
- 1975-02-17 SE SE7501732A patent/SE7501732L/xx unknown
- 1975-02-18 AU AU78303/75A patent/AU468706B2/en not_active Expired
- 1975-02-18 IT IT67412/75A patent/IT1030169B/en active
- 1975-02-18 JP JP50020295A patent/JPS50118987A/ja active Pending
- 1975-02-18 NO NO750537A patent/NO750537L/no unknown
- 1975-02-18 BR BR977/75A patent/BR7500977A/en unknown
- 1975-02-19 ES ES434864A patent/ES434864A1/en not_active Expired
- 1975-02-19 NL NL7501979A patent/NL7501979A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1030169B (en) | 1979-03-30 |
| FR2261223A1 (en) | 1975-09-12 |
| FR2261223B3 (en) | 1977-10-28 |
| NO750537L (en) | 1975-08-20 |
| DE2506666A1 (en) | 1975-10-09 |
| SE7501732L (en) | 1975-08-20 |
| BR7500977A (en) | 1975-12-02 |
| AU7830375A (en) | 1976-01-22 |
| US3971844A (en) | 1976-07-27 |
| ZA75376B (en) | 1976-01-28 |
| NL7501979A (en) | 1975-08-21 |
| BE825584A (en) | 1975-05-29 |
| ATA104375A (en) | 1976-11-15 |
| AU468706B2 (en) | 1976-01-22 |
| JPS50118987A (en) | 1975-09-18 |
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